+++ /dev/null
-/*
- * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved.
- *
- * Derived from Intel e1000 driver
- * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include "atl1c.h"
-
-#define ATL1C_DRV_VERSION "1.0.0.1-NAPI"
-char atl1c_driver_name[] = "atl1c";
-char atl1c_driver_version[] = ATL1C_DRV_VERSION;
-#define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062
-#define PCI_DEVICE_ID_ATTANSIC_L1C 0x1063
-/*
- * atl1c_pci_tbl - PCI Device ID Table
- *
- * Wildcard entries (PCI_ANY_ID) should come last
- * Last entry must be all 0s
- *
- * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
- * Class, Class Mask, private data (not used) }
- */
-static struct pci_device_id atl1c_pci_tbl[] = {
- {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)},
- {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)},
- /* required last entry */
- { 0 }
-};
-MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl);
-
-MODULE_AUTHOR("Jie Yang <jie.yang@atheros.com>");
-MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(ATL1C_DRV_VERSION);
-
-static int atl1c_stop_mac(struct atl1c_hw *hw);
-static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw);
-static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw);
-static void atl1c_disable_l0s_l1(struct atl1c_hw *hw);
-static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup);
-static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter);
-static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que,
- int *work_done, int work_to_do);
-
-static const u16 atl1c_pay_load_size[] = {
- 128, 256, 512, 1024, 2048, 4096,
-};
-
-static const u16 atl1c_rfd_prod_idx_regs[AT_MAX_RECEIVE_QUEUE] =
-{
- REG_MB_RFD0_PROD_IDX,
- REG_MB_RFD1_PROD_IDX,
- REG_MB_RFD2_PROD_IDX,
- REG_MB_RFD3_PROD_IDX
-};
-
-static const u16 atl1c_rfd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] =
-{
- REG_RFD0_HEAD_ADDR_LO,
- REG_RFD1_HEAD_ADDR_LO,
- REG_RFD2_HEAD_ADDR_LO,
- REG_RFD3_HEAD_ADDR_LO
-};
-
-static const u16 atl1c_rrd_addr_lo_regs[AT_MAX_RECEIVE_QUEUE] =
-{
- REG_RRD0_HEAD_ADDR_LO,
- REG_RRD1_HEAD_ADDR_LO,
- REG_RRD2_HEAD_ADDR_LO,
- REG_RRD3_HEAD_ADDR_LO
-};
-
-static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
- NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
-
-/*
- * atl1c_init_pcie - init PCIE module
- */
-static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag)
-{
- u32 data;
- u32 pci_cmd;
- struct pci_dev *pdev = hw->adapter->pdev;
-
- AT_READ_REG(hw, PCI_COMMAND, &pci_cmd);
- pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
- pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
- PCI_COMMAND_IO);
- AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd);
-
- /*
- * Clear any PowerSaveing Settings
- */
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- /*
- * Mask some pcie error bits
- */
- AT_READ_REG(hw, REG_PCIE_UC_SEVERITY, &data);
- data &= ~PCIE_UC_SERVRITY_DLP;
- data &= ~PCIE_UC_SERVRITY_FCP;
- AT_WRITE_REG(hw, REG_PCIE_UC_SEVERITY, data);
-
- if (flag & ATL1C_PCIE_L0S_L1_DISABLE)
- atl1c_disable_l0s_l1(hw);
- if (flag & ATL1C_PCIE_PHY_RESET)
- AT_WRITE_REG(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT);
- else
- AT_WRITE_REG(hw, REG_GPHY_CTRL,
- GPHY_CTRL_DEFAULT | GPHY_CTRL_EXT_RESET);
-
- msleep(1);
-}
-
-/*
- * atl1c_irq_enable - Enable default interrupt generation settings
- * @adapter: board private structure
- */
-static inline void atl1c_irq_enable(struct atl1c_adapter *adapter)
-{
- if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
- AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF);
- AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask);
- AT_WRITE_FLUSH(&adapter->hw);
- }
-}
-
-/*
- * atl1c_irq_disable - Mask off interrupt generation on the NIC
- * @adapter: board private structure
- */
-static inline void atl1c_irq_disable(struct atl1c_adapter *adapter)
-{
- atomic_inc(&adapter->irq_sem);
- AT_WRITE_REG(&adapter->hw, REG_IMR, 0);
- AT_WRITE_FLUSH(&adapter->hw);
- synchronize_irq(adapter->pdev->irq);
-}
-
-/*
- * atl1c_irq_reset - reset interrupt confiure on the NIC
- * @adapter: board private structure
- */
-static inline void atl1c_irq_reset(struct atl1c_adapter *adapter)
-{
- atomic_set(&adapter->irq_sem, 1);
- atl1c_irq_enable(adapter);
-}
-
-/*
- * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
- * of the idle status register until the device is actually idle
- */
-static u32 atl1c_wait_until_idle(struct atl1c_hw *hw)
-{
- int timeout;
- u32 data;
-
- for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
- AT_READ_REG(hw, REG_IDLE_STATUS, &data);
- if ((data & IDLE_STATUS_MASK) == 0)
- return 0;
- msleep(1);
- }
- return data;
-}
-
-/*
- * atl1c_phy_config - Timer Call-back
- * @data: pointer to netdev cast into an unsigned long
- */
-static void atl1c_phy_config(unsigned long data)
-{
- struct atl1c_adapter *adapter = (struct atl1c_adapter *) data;
- struct atl1c_hw *hw = &adapter->hw;
- unsigned long flags;
-
- spin_lock_irqsave(&adapter->mdio_lock, flags);
- atl1c_restart_autoneg(hw);
- spin_unlock_irqrestore(&adapter->mdio_lock, flags);
-}
-
-void atl1c_reinit_locked(struct atl1c_adapter *adapter)
-{
-
- WARN_ON(in_interrupt());
- atl1c_down(adapter);
- atl1c_up(adapter);
- clear_bit(__AT_RESETTING, &adapter->flags);
-}
-
-static void atl1c_reset_task(struct work_struct *work)
-{
- struct atl1c_adapter *adapter;
- struct net_device *netdev;
-
- adapter = container_of(work, struct atl1c_adapter, reset_task);
- netdev = adapter->netdev;
-
- netif_device_detach(netdev);
- atl1c_down(adapter);
- atl1c_up(adapter);
- netif_device_attach(netdev);
-}
-
-static void atl1c_check_link_status(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- int err;
- unsigned long flags;
- u16 speed, duplex, phy_data;
-
- spin_lock_irqsave(&adapter->mdio_lock, flags);
- /* MII_BMSR must read twise */
- atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
- atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
- spin_unlock_irqrestore(&adapter->mdio_lock, flags);
-
- if ((phy_data & BMSR_LSTATUS) == 0) {
- /* link down */
- if (netif_carrier_ok(netdev)) {
- hw->hibernate = true;
- if (atl1c_stop_mac(hw) != 0)
- if (netif_msg_hw(adapter))
- dev_warn(&pdev->dev,
- "stop mac failed\n");
- atl1c_set_aspm(hw, false);
- }
- netif_carrier_off(netdev);
- } else {
- /* Link Up */
- hw->hibernate = false;
- spin_lock_irqsave(&adapter->mdio_lock, flags);
- err = atl1c_get_speed_and_duplex(hw, &speed, &duplex);
- spin_unlock_irqrestore(&adapter->mdio_lock, flags);
- if (unlikely(err))
- return;
- /* link result is our setting */
- if (adapter->link_speed != speed ||
- adapter->link_duplex != duplex) {
- adapter->link_speed = speed;
- adapter->link_duplex = duplex;
- atl1c_set_aspm(hw, true);
- atl1c_enable_tx_ctrl(hw);
- atl1c_enable_rx_ctrl(hw);
- atl1c_setup_mac_ctrl(adapter);
- if (netif_msg_link(adapter))
- dev_info(&pdev->dev,
- "%s: %s NIC Link is Up<%d Mbps %s>\n",
- atl1c_driver_name, netdev->name,
- adapter->link_speed,
- adapter->link_duplex == FULL_DUPLEX ?
- "Full Duplex" : "Half Duplex");
- }
- if (!netif_carrier_ok(netdev))
- netif_carrier_on(netdev);
- }
-}
-
-/*
- * atl1c_link_chg_task - deal with link change event Out of interrupt context
- * @netdev: network interface device structure
- */
-static void atl1c_link_chg_task(struct work_struct *work)
-{
- struct atl1c_adapter *adapter;
-
- adapter = container_of(work, struct atl1c_adapter, link_chg_task);
- atl1c_check_link_status(adapter);
-}
-
-static void atl1c_link_chg_event(struct atl1c_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- u16 phy_data;
- u16 link_up;
-
- spin_lock(&adapter->mdio_lock);
- atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
- atl1c_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
- spin_unlock(&adapter->mdio_lock);
- link_up = phy_data & BMSR_LSTATUS;
- /* notify upper layer link down ASAP */
- if (!link_up) {
- if (netif_carrier_ok(netdev)) {
- /* old link state: Up */
- netif_carrier_off(netdev);
- if (netif_msg_link(adapter))
- dev_info(&pdev->dev,
- "%s: %s NIC Link is Down\n",
- atl1c_driver_name, netdev->name);
- adapter->link_speed = SPEED_0;
- }
- }
- schedule_work(&adapter->link_chg_task);
-}
-
-static void atl1c_del_timer(struct atl1c_adapter *adapter)
-{
- del_timer_sync(&adapter->phy_config_timer);
-}
-
-static void atl1c_cancel_work(struct atl1c_adapter *adapter)
-{
- cancel_work_sync(&adapter->reset_task);
- cancel_work_sync(&adapter->link_chg_task);
-}
-
-/*
- * atl1c_tx_timeout - Respond to a Tx Hang
- * @netdev: network interface device structure
- */
-static void atl1c_tx_timeout(struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- /* Do the reset outside of interrupt context */
- schedule_work(&adapter->reset_task);
-}
-
-/*
- * atl1c_set_multi - Multicast and Promiscuous mode set
- * @netdev: network interface device structure
- *
- * The set_multi entry point is called whenever the multicast address
- * list or the network interface flags are updated. This routine is
- * responsible for configuring the hardware for proper multicast,
- * promiscuous mode, and all-multi behavior.
- */
-static void atl1c_set_multi(struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct atl1c_hw *hw = &adapter->hw;
- struct dev_mc_list *mc_ptr;
- u32 mac_ctrl_data;
- u32 hash_value;
-
- /* Check for Promiscuous and All Multicast modes */
- AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data);
-
- if (netdev->flags & IFF_PROMISC) {
- mac_ctrl_data |= MAC_CTRL_PROMIS_EN;
- } else if (netdev->flags & IFF_ALLMULTI) {
- mac_ctrl_data |= MAC_CTRL_MC_ALL_EN;
- mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN;
- } else {
- mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
- }
-
- AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
-
- /* clear the old settings from the multicast hash table */
- AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
- AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0);
-
- /* comoute mc addresses' hash value ,and put it into hash table */
- for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
- hash_value = atl1c_hash_mc_addr(hw, mc_ptr->dmi_addr);
- atl1c_hash_set(hw, hash_value);
- }
-}
-
-static void atl1c_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *grp)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct pci_dev *pdev = adapter->pdev;
- u32 mac_ctrl_data = 0;
-
- if (netif_msg_pktdata(adapter))
- dev_dbg(&pdev->dev, "atl1c_vlan_rx_register\n");
-
- atl1c_irq_disable(adapter);
-
- adapter->vlgrp = grp;
- AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data);
-
- if (grp) {
- /* enable VLAN tag insert/strip */
- mac_ctrl_data |= MAC_CTRL_RMV_VLAN;
- } else {
- /* disable VLAN tag insert/strip */
- mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN;
- }
-
- AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data);
- atl1c_irq_enable(adapter);
-}
-
-static void atl1c_restore_vlan(struct atl1c_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
-
- if (netif_msg_pktdata(adapter))
- dev_dbg(&pdev->dev, "atl1c_restore_vlan !");
- atl1c_vlan_rx_register(adapter->netdev, adapter->vlgrp);
-}
-/*
- * atl1c_set_mac - Change the Ethernet Address of the NIC
- * @netdev: network interface device structure
- * @p: pointer to an address structure
- *
- * Returns 0 on success, negative on failure
- */
-static int atl1c_set_mac_addr(struct net_device *netdev, void *p)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- if (netif_running(netdev))
- return -EBUSY;
-
- memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
- memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
-
- atl1c_hw_set_mac_addr(&adapter->hw);
-
- return 0;
-}
-
-static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter,
- struct net_device *dev)
-{
- int mtu = dev->mtu;
-
- adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ?
- roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE;
-}
-/*
- * atl1c_change_mtu - Change the Maximum Transfer Unit
- * @netdev: network interface device structure
- * @new_mtu: new value for maximum frame size
- *
- * Returns 0 on success, negative on failure
- */
-static int atl1c_change_mtu(struct net_device *netdev, int new_mtu)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- int old_mtu = netdev->mtu;
- int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
-
- if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
- (max_frame > MAX_JUMBO_FRAME_SIZE)) {
- if (netif_msg_link(adapter))
- dev_warn(&adapter->pdev->dev, "invalid MTU setting\n");
- return -EINVAL;
- }
- /* set MTU */
- if (old_mtu != new_mtu && netif_running(netdev)) {
- while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
- msleep(1);
- netdev->mtu = new_mtu;
- adapter->hw.max_frame_size = new_mtu;
- atl1c_set_rxbufsize(adapter, netdev);
- atl1c_down(adapter);
- atl1c_up(adapter);
- clear_bit(__AT_RESETTING, &adapter->flags);
- if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) {
- u32 phy_data;
-
- AT_READ_REG(&adapter->hw, 0x1414, &phy_data);
- phy_data |= 0x10000000;
- AT_WRITE_REG(&adapter->hw, 0x1414, phy_data);
- }
-
- }
- return 0;
-}
-
-/*
- * caller should hold mdio_lock
- */
-static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- u16 result;
-
- atl1c_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result);
- return result;
-}
-
-static void atl1c_mdio_write(struct net_device *netdev, int phy_id,
- int reg_num, int val)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- atl1c_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val);
-}
-
-/*
- * atl1c_mii_ioctl -
- * @netdev:
- * @ifreq:
- * @cmd:
- */
-static int atl1c_mii_ioctl(struct net_device *netdev,
- struct ifreq *ifr, int cmd)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct pci_dev *pdev = adapter->pdev;
- struct mii_ioctl_data *data = if_mii(ifr);
- unsigned long flags;
- int retval = 0;
-
- if (!netif_running(netdev))
- return -EINVAL;
-
- spin_lock_irqsave(&adapter->mdio_lock, flags);
- switch (cmd) {
- case SIOCGMIIPHY:
- data->phy_id = 0;
- break;
-
- case SIOCGMIIREG:
- if (!capable(CAP_NET_ADMIN)) {
- retval = -EPERM;
- goto out;
- }
- if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
- &data->val_out)) {
- retval = -EIO;
- goto out;
- }
- break;
-
- case SIOCSMIIREG:
- if (!capable(CAP_NET_ADMIN)) {
- retval = -EPERM;
- goto out;
- }
- if (data->reg_num & ~(0x1F)) {
- retval = -EFAULT;
- goto out;
- }
-
- dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x",
- data->reg_num, data->val_in);
- if (atl1c_write_phy_reg(&adapter->hw,
- data->reg_num, data->val_in)) {
- retval = -EIO;
- goto out;
- }
- break;
-
- default:
- retval = -EOPNOTSUPP;
- break;
- }
-out:
- spin_unlock_irqrestore(&adapter->mdio_lock, flags);
- return retval;
-}
-
-/*
- * atl1c_ioctl -
- * @netdev:
- * @ifreq:
- * @cmd:
- */
-static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
-{
- switch (cmd) {
- case SIOCGMIIPHY:
- case SIOCGMIIREG:
- case SIOCSMIIREG:
- return atl1c_mii_ioctl(netdev, ifr, cmd);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-/*
- * atl1c_alloc_queues - Allocate memory for all rings
- * @adapter: board private structure to initialize
- *
- */
-static int __devinit atl1c_alloc_queues(struct atl1c_adapter *adapter)
-{
- return 0;
-}
-
-static void atl1c_set_mac_type(struct atl1c_hw *hw)
-{
- switch (hw->device_id) {
- case PCI_DEVICE_ID_ATTANSIC_L2C:
- hw->nic_type = athr_l2c;
- break;
-
- case PCI_DEVICE_ID_ATTANSIC_L1C:
- hw->nic_type = athr_l1c;
- break;
-
- default:
- break;
- }
-}
-
-static int atl1c_setup_mac_funcs(struct atl1c_hw *hw)
-{
- u32 phy_status_data;
- u32 link_ctrl_data;
-
- atl1c_set_mac_type(hw);
- AT_READ_REG(hw, REG_PHY_STATUS, &phy_status_data);
- AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data);
-
- hw->ctrl_flags = ATL1C_INTR_CLEAR_ON_READ |
- ATL1C_INTR_MODRT_ENABLE |
- ATL1C_RX_IPV6_CHKSUM |
- ATL1C_TXQ_MODE_ENHANCE;
- if (link_ctrl_data & LINK_CTRL_L0S_EN)
- hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT;
- if (link_ctrl_data & LINK_CTRL_L1_EN)
- hw->ctrl_flags |= ATL1C_ASPM_L1_SUPPORT;
-
- if (hw->nic_type == athr_l1c) {
- hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON;
- hw->ctrl_flags |= ATL1C_LINK_CAP_1000M;
- }
- return 0;
-}
-/*
- * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
- * @adapter: board private structure to initialize
- *
- * atl1c_sw_init initializes the Adapter private data structure.
- * Fields are initialized based on PCI device information and
- * OS network device settings (MTU size).
- */
-static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
-
- adapter->wol = 0;
- adapter->link_speed = SPEED_0;
- adapter->link_duplex = FULL_DUPLEX;
- adapter->num_rx_queues = AT_DEF_RECEIVE_QUEUE;
- adapter->tpd_ring[0].count = 1024;
- adapter->rfd_ring[0].count = 512;
-
- hw->vendor_id = pdev->vendor;
- hw->device_id = pdev->device;
- hw->subsystem_vendor_id = pdev->subsystem_vendor;
- hw->subsystem_id = pdev->subsystem_device;
-
- /* before link up, we assume hibernate is true */
- hw->hibernate = true;
- hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
- if (atl1c_setup_mac_funcs(hw) != 0) {
- dev_err(&pdev->dev, "set mac function pointers failed\n");
- return -1;
- }
- hw->intr_mask = IMR_NORMAL_MASK;
- hw->phy_configured = false;
- hw->preamble_len = 7;
- hw->max_frame_size = adapter->netdev->mtu;
- if (adapter->num_rx_queues < 2) {
- hw->rss_type = atl1c_rss_disable;
- hw->rss_mode = atl1c_rss_mode_disable;
- } else {
- hw->rss_type = atl1c_rss_ipv4;
- hw->rss_mode = atl1c_rss_mul_que_mul_int;
- hw->rss_hash_bits = 16;
- }
- hw->autoneg_advertised = ADVERTISED_Autoneg;
- hw->indirect_tab = 0xE4E4E4E4;
- hw->base_cpu = 0;
-
- hw->ict = 50000; /* 100ms */
- hw->smb_timer = 200000; /* 400ms */
- hw->cmb_tpd = 4;
- hw->cmb_tx_timer = 1; /* 2 us */
- hw->rx_imt = 200;
- hw->tx_imt = 1000;
-
- hw->tpd_burst = 5;
- hw->rfd_burst = 8;
- hw->dma_order = atl1c_dma_ord_out;
- hw->dmar_block = atl1c_dma_req_1024;
- hw->dmaw_block = atl1c_dma_req_1024;
- hw->dmar_dly_cnt = 15;
- hw->dmaw_dly_cnt = 4;
-
- if (atl1c_alloc_queues(adapter)) {
- dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
- return -ENOMEM;
- }
- /* TODO */
- atl1c_set_rxbufsize(adapter, adapter->netdev);
- atomic_set(&adapter->irq_sem, 1);
- spin_lock_init(&adapter->mdio_lock);
- spin_lock_init(&adapter->tx_lock);
- set_bit(__AT_DOWN, &adapter->flags);
-
- return 0;
-}
-
-/*
- * atl1c_clean_tx_ring - Free Tx-skb
- * @adapter: board private structure
- */
-static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter,
- enum atl1c_trans_queue type)
-{
- struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type];
- struct atl1c_buffer *buffer_info;
- struct pci_dev *pdev = adapter->pdev;
- u16 index, ring_count;
-
- ring_count = tpd_ring->count;
- for (index = 0; index < ring_count; index++) {
- buffer_info = &tpd_ring->buffer_info[index];
- if (buffer_info->state == ATL1_BUFFER_FREE)
- continue;
- if (buffer_info->dma)
- pci_unmap_single(pdev, buffer_info->dma,
- buffer_info->length,
- PCI_DMA_TODEVICE);
- if (buffer_info->skb)
- dev_kfree_skb(buffer_info->skb);
- buffer_info->dma = 0;
- buffer_info->skb = NULL;
- buffer_info->state = ATL1_BUFFER_FREE;
- }
-
- /* Zero out Tx-buffers */
- memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) *
- ring_count);
- atomic_set(&tpd_ring->next_to_clean, 0);
- tpd_ring->next_to_use = 0;
-}
-
-/*
- * atl1c_clean_rx_ring - Free rx-reservation skbs
- * @adapter: board private structure
- */
-static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter)
-{
- struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring;
- struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring;
- struct atl1c_buffer *buffer_info;
- struct pci_dev *pdev = adapter->pdev;
- int i, j;
-
- for (i = 0; i < adapter->num_rx_queues; i++) {
- for (j = 0; j < rfd_ring[i].count; j++) {
- buffer_info = &rfd_ring[i].buffer_info[j];
- if (buffer_info->state == ATL1_BUFFER_FREE)
- continue;
- if (buffer_info->dma)
- pci_unmap_single(pdev, buffer_info->dma,
- buffer_info->length,
- PCI_DMA_FROMDEVICE);
- if (buffer_info->skb)
- dev_kfree_skb(buffer_info->skb);
- buffer_info->state = ATL1_BUFFER_FREE;
- buffer_info->skb = NULL;
- }
- /* zero out the descriptor ring */
- memset(rfd_ring[i].desc, 0, rfd_ring[i].size);
- rfd_ring[i].next_to_clean = 0;
- rfd_ring[i].next_to_use = 0;
- rrd_ring[i].next_to_use = 0;
- rrd_ring[i].next_to_clean = 0;
- }
-}
-
-/*
- * Read / Write Ptr Initialize:
- */
-static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter)
-{
- struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
- struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring;
- struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring;
- struct atl1c_buffer *buffer_info;
- int i, j;
-
- for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) {
- tpd_ring[i].next_to_use = 0;
- atomic_set(&tpd_ring[i].next_to_clean, 0);
- buffer_info = tpd_ring[i].buffer_info;
- for (j = 0; j < tpd_ring->count; j++)
- buffer_info[i].state = ATL1_BUFFER_FREE;
- }
- for (i = 0; i < adapter->num_rx_queues; i++) {
- rfd_ring[i].next_to_use = 0;
- rfd_ring[i].next_to_clean = 0;
- rrd_ring[i].next_to_use = 0;
- rrd_ring[i].next_to_clean = 0;
- for (j = 0; j < rfd_ring[i].count; j++) {
- buffer_info = &rfd_ring[i].buffer_info[j];
- buffer_info->state = ATL1_BUFFER_FREE;
- }
- }
-}
-
-/*
- * atl1c_free_ring_resources - Free Tx / RX descriptor Resources
- * @adapter: board private structure
- *
- * Free all transmit software resources
- */
-static void atl1c_free_ring_resources(struct atl1c_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
-
- pci_free_consistent(pdev, adapter->ring_header.size,
- adapter->ring_header.desc,
- adapter->ring_header.dma);
- adapter->ring_header.desc = NULL;
-
- /* Note: just free tdp_ring.buffer_info,
- * it contain rfd_ring.buffer_info, do not double free */
- if (adapter->tpd_ring[0].buffer_info) {
- kfree(adapter->tpd_ring[0].buffer_info);
- adapter->tpd_ring[0].buffer_info = NULL;
- }
-}
-
-/*
- * atl1c_setup_mem_resources - allocate Tx / RX descriptor resources
- * @adapter: board private structure
- *
- * Return 0 on success, negative on failure
- */
-static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
- struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring;
- struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring;
- struct atl1c_ring_header *ring_header = &adapter->ring_header;
- int num_rx_queues = adapter->num_rx_queues;
- int size;
- int i;
- int count = 0;
- int rx_desc_count = 0;
- u32 offset = 0;
-
- rrd_ring[0].count = rfd_ring[0].count;
- for (i = 1; i < AT_MAX_TRANSMIT_QUEUE; i++)
- tpd_ring[i].count = tpd_ring[0].count;
-
- for (i = 1; i < adapter->num_rx_queues; i++)
- rfd_ring[i].count = rrd_ring[i].count = rfd_ring[0].count;
-
- /* 2 tpd queue, one high priority queue,
- * another normal priority queue */
- size = sizeof(struct atl1c_buffer) * (tpd_ring->count * 2 +
- rfd_ring->count * num_rx_queues);
- tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
- if (unlikely(!tpd_ring->buffer_info)) {
- dev_err(&pdev->dev, "kzalloc failed, size = %d\n",
- size);
- goto err_nomem;
- }
- for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) {
- tpd_ring[i].buffer_info =
- (struct atl1c_buffer *) (tpd_ring->buffer_info + count);
- count += tpd_ring[i].count;
- }
-
- for (i = 0; i < num_rx_queues; i++) {
- rfd_ring[i].buffer_info =
- (struct atl1c_buffer *) (tpd_ring->buffer_info + count);
- count += rfd_ring[i].count;
- rx_desc_count += rfd_ring[i].count;
- }
- /*
- * real ring DMA buffer
- * each ring/block may need up to 8 bytes for alignment, hence the
- * additional bytes tacked onto the end.
- */
- ring_header->size = size =
- sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 +
- sizeof(struct atl1c_rx_free_desc) * rx_desc_count +
- sizeof(struct atl1c_recv_ret_status) * rx_desc_count +
- sizeof(struct atl1c_hw_stats) +
- 8 * 4 + 8 * 2 * num_rx_queues;
-
- ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
- &ring_header->dma);
- if (unlikely(!ring_header->desc)) {
- dev_err(&pdev->dev, "pci_alloc_consistend failed\n");
- goto err_nomem;
- }
- memset(ring_header->desc, 0, ring_header->size);
- /* init TPD ring */
-
- tpd_ring[0].dma = roundup(ring_header->dma, 8);
- offset = tpd_ring[0].dma - ring_header->dma;
- for (i = 0; i < AT_MAX_TRANSMIT_QUEUE; i++) {
- tpd_ring[i].dma = ring_header->dma + offset;
- tpd_ring[i].desc = (u8 *) ring_header->desc + offset;
- tpd_ring[i].size =
- sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count;
- offset += roundup(tpd_ring[i].size, 8);
- }
- /* init RFD ring */
- for (i = 0; i < num_rx_queues; i++) {
- rfd_ring[i].dma = ring_header->dma + offset;
- rfd_ring[i].desc = (u8 *) ring_header->desc + offset;
- rfd_ring[i].size = sizeof(struct atl1c_rx_free_desc) *
- rfd_ring[i].count;
- offset += roundup(rfd_ring[i].size, 8);
- }
-
- /* init RRD ring */
- for (i = 0; i < num_rx_queues; i++) {
- rrd_ring[i].dma = ring_header->dma + offset;
- rrd_ring[i].desc = (u8 *) ring_header->desc + offset;
- rrd_ring[i].size = sizeof(struct atl1c_recv_ret_status) *
- rrd_ring[i].count;
- offset += roundup(rrd_ring[i].size, 8);
- }
-
- adapter->smb.dma = ring_header->dma + offset;
- adapter->smb.smb = (u8 *)ring_header->desc + offset;
- return 0;
-
-err_nomem:
- kfree(tpd_ring->buffer_info);
- return -ENOMEM;
-}
-
-static void atl1c_configure_des_ring(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- struct atl1c_rfd_ring *rfd_ring = (struct atl1c_rfd_ring *)
- adapter->rfd_ring;
- struct atl1c_rrd_ring *rrd_ring = (struct atl1c_rrd_ring *)
- adapter->rrd_ring;
- struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *)
- adapter->tpd_ring;
- struct atl1c_cmb *cmb = (struct atl1c_cmb *) &adapter->cmb;
- struct atl1c_smb *smb = (struct atl1c_smb *) &adapter->smb;
- int i;
-
- /* TPD */
- AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI,
- (u32)((tpd_ring[atl1c_trans_normal].dma &
- AT_DMA_HI_ADDR_MASK) >> 32));
- /* just enable normal priority TX queue */
- AT_WRITE_REG(hw, REG_NTPD_HEAD_ADDR_LO,
- (u32)(tpd_ring[atl1c_trans_normal].dma &
- AT_DMA_LO_ADDR_MASK));
- AT_WRITE_REG(hw, REG_HTPD_HEAD_ADDR_LO,
- (u32)(tpd_ring[atl1c_trans_high].dma &
- AT_DMA_LO_ADDR_MASK));
- AT_WRITE_REG(hw, REG_TPD_RING_SIZE,
- (u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK));
-
-
- /* RFD */
- AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI,
- (u32)((rfd_ring[0].dma & AT_DMA_HI_ADDR_MASK) >> 32));
- for (i = 0; i < adapter->num_rx_queues; i++)
- AT_WRITE_REG(hw, atl1c_rfd_addr_lo_regs[i],
- (u32)(rfd_ring[i].dma & AT_DMA_LO_ADDR_MASK));
-
- AT_WRITE_REG(hw, REG_RFD_RING_SIZE,
- rfd_ring[0].count & RFD_RING_SIZE_MASK);
- AT_WRITE_REG(hw, REG_RX_BUF_SIZE,
- adapter->rx_buffer_len & RX_BUF_SIZE_MASK);
-
- /* RRD */
- for (i = 0; i < adapter->num_rx_queues; i++)
- AT_WRITE_REG(hw, atl1c_rrd_addr_lo_regs[i],
- (u32)(rrd_ring[i].dma & AT_DMA_LO_ADDR_MASK));
- AT_WRITE_REG(hw, REG_RRD_RING_SIZE,
- (rrd_ring[0].count & RRD_RING_SIZE_MASK));
-
- /* CMB */
- AT_WRITE_REG(hw, REG_CMB_BASE_ADDR_LO, cmb->dma & AT_DMA_LO_ADDR_MASK);
-
- /* SMB */
- AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_HI,
- (u32)((smb->dma & AT_DMA_HI_ADDR_MASK) >> 32));
- AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_LO,
- (u32)(smb->dma & AT_DMA_LO_ADDR_MASK));
- /* Load all of base address above */
- AT_WRITE_REG(hw, REG_LOAD_PTR, 1);
-}
-
-static void atl1c_configure_tx(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- u32 dev_ctrl_data;
- u32 max_pay_load;
- u16 tx_offload_thresh;
- u32 txq_ctrl_data;
- u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */
-
- extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
- tx_offload_thresh = MAX_TX_OFFLOAD_THRESH;
- AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH,
- (tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK);
- AT_READ_REG(hw, REG_DEVICE_CTRL, &dev_ctrl_data);
- max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT) &
- DEVICE_CTRL_MAX_PAYLOAD_MASK;
- hw->dmaw_block = min(max_pay_load, hw->dmaw_block);
- max_pay_load = (dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT) &
- DEVICE_CTRL_MAX_RREQ_SZ_MASK;
- hw->dmar_block = min(max_pay_load, hw->dmar_block);
-
- txq_ctrl_data = (hw->tpd_burst & TXQ_NUM_TPD_BURST_MASK) <<
- TXQ_NUM_TPD_BURST_SHIFT;
- if (hw->ctrl_flags & ATL1C_TXQ_MODE_ENHANCE)
- txq_ctrl_data |= TXQ_CTRL_ENH_MODE;
- txq_ctrl_data |= (atl1c_pay_load_size[hw->dmar_block] &
- TXQ_TXF_BURST_NUM_MASK) << TXQ_TXF_BURST_NUM_SHIFT;
-
- AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data);
-}
-
-static void atl1c_configure_rx(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- u32 rxq_ctrl_data;
-
- rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) <<
- RXQ_RFD_BURST_NUM_SHIFT;
-
- if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM)
- rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN;
- if (hw->rss_type == atl1c_rss_ipv4)
- rxq_ctrl_data |= RSS_HASH_IPV4;
- if (hw->rss_type == atl1c_rss_ipv4_tcp)
- rxq_ctrl_data |= RSS_HASH_IPV4_TCP;
- if (hw->rss_type == atl1c_rss_ipv6)
- rxq_ctrl_data |= RSS_HASH_IPV6;
- if (hw->rss_type == atl1c_rss_ipv6_tcp)
- rxq_ctrl_data |= RSS_HASH_IPV6_TCP;
- if (hw->rss_type != atl1c_rss_disable)
- rxq_ctrl_data |= RRS_HASH_CTRL_EN;
-
- rxq_ctrl_data |= (hw->rss_mode & RSS_MODE_MASK) <<
- RSS_MODE_SHIFT;
- rxq_ctrl_data |= (hw->rss_hash_bits & RSS_HASH_BITS_MASK) <<
- RSS_HASH_BITS_SHIFT;
- if (hw->ctrl_flags & ATL1C_ASPM_CTRL_MON)
- rxq_ctrl_data |= (ASPM_THRUPUT_LIMIT_100M &
- ASPM_THRUPUT_LIMIT_MASK) << ASPM_THRUPUT_LIMIT_SHIFT;
-
- AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data);
-}
-
-static void atl1c_configure_rss(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
-
- AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab);
- AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu);
-}
-
-static void atl1c_configure_dma(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- u32 dma_ctrl_data;
-
- dma_ctrl_data = DMA_CTRL_DMAR_REQ_PRI;
- if (hw->ctrl_flags & ATL1C_CMB_ENABLE)
- dma_ctrl_data |= DMA_CTRL_CMB_EN;
- if (hw->ctrl_flags & ATL1C_SMB_ENABLE)
- dma_ctrl_data |= DMA_CTRL_SMB_EN;
- else
- dma_ctrl_data |= MAC_CTRL_SMB_DIS;
-
- switch (hw->dma_order) {
- case atl1c_dma_ord_in:
- dma_ctrl_data |= DMA_CTRL_DMAR_IN_ORDER;
- break;
- case atl1c_dma_ord_enh:
- dma_ctrl_data |= DMA_CTRL_DMAR_ENH_ORDER;
- break;
- case atl1c_dma_ord_out:
- dma_ctrl_data |= DMA_CTRL_DMAR_OUT_ORDER;
- break;
- default:
- break;
- }
-
- dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
- << DMA_CTRL_DMAR_BURST_LEN_SHIFT;
- dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
- << DMA_CTRL_DMAW_BURST_LEN_SHIFT;
- dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK)
- << DMA_CTRL_DMAR_DLY_CNT_SHIFT;
- dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK)
- << DMA_CTRL_DMAW_DLY_CNT_SHIFT;
-
- AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data);
-}
-
-/*
- * Stop the mac, transmit and receive units
- * hw - Struct containing variables accessed by shared code
- * return : 0 or idle status (if error)
- */
-static int atl1c_stop_mac(struct atl1c_hw *hw)
-{
- u32 data;
-
- AT_READ_REG(hw, REG_RXQ_CTRL, &data);
- data &= ~(RXQ1_CTRL_EN | RXQ2_CTRL_EN |
- RXQ3_CTRL_EN | RXQ_CTRL_EN);
- AT_WRITE_REG(hw, REG_RXQ_CTRL, data);
-
- AT_READ_REG(hw, REG_TXQ_CTRL, &data);
- data &= ~TXQ_CTRL_EN;
- AT_WRITE_REG(hw, REG_TWSI_CTRL, data);
-
- atl1c_wait_until_idle(hw);
-
- AT_READ_REG(hw, REG_MAC_CTRL, &data);
- data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN);
- AT_WRITE_REG(hw, REG_MAC_CTRL, data);
-
- return (int)atl1c_wait_until_idle(hw);
-}
-
-static void atl1c_enable_rx_ctrl(struct atl1c_hw *hw)
-{
- u32 data;
-
- AT_READ_REG(hw, REG_RXQ_CTRL, &data);
- switch (hw->adapter->num_rx_queues) {
- case 4:
- data |= (RXQ3_CTRL_EN | RXQ2_CTRL_EN | RXQ1_CTRL_EN);
- break;
- case 3:
- data |= (RXQ2_CTRL_EN | RXQ1_CTRL_EN);
- break;
- case 2:
- data |= RXQ1_CTRL_EN;
- break;
- default:
- break;
- }
- data |= RXQ_CTRL_EN;
- AT_WRITE_REG(hw, REG_RXQ_CTRL, data);
-}
-
-static void atl1c_enable_tx_ctrl(struct atl1c_hw *hw)
-{
- u32 data;
-
- AT_READ_REG(hw, REG_TXQ_CTRL, &data);
- data |= TXQ_CTRL_EN;
- AT_WRITE_REG(hw, REG_TXQ_CTRL, data);
-}
-
-/*
- * Reset the transmit and receive units; mask and clear all interrupts.
- * hw - Struct containing variables accessed by shared code
- * return : 0 or idle status (if error)
- */
-static int atl1c_reset_mac(struct atl1c_hw *hw)
-{
- struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter;
- struct pci_dev *pdev = adapter->pdev;
- int ret;
-
- AT_WRITE_REG(hw, REG_IMR, 0);
- AT_WRITE_REG(hw, REG_ISR, ISR_DIS_INT);
-
- ret = atl1c_stop_mac(hw);
- if (ret)
- return ret;
- /*
- * Issue Soft Reset to the MAC. This will reset the chip's
- * transmit, receive, DMA. It will not effect
- * the current PCI configuration. The global reset bit is self-
- * clearing, and should clear within a microsecond.
- */
- AT_WRITE_REGW(hw, REG_MASTER_CTRL, MASTER_CTRL_SOFT_RST);
- AT_WRITE_FLUSH(hw);
- msleep(10);
- /* Wait at least 10ms for All module to be Idle */
-
- if (atl1c_wait_until_idle(hw)) {
- dev_err(&pdev->dev,
- "MAC state machine can't be idle since"
- " disabled for 10ms second\n");
- return -1;
- }
- return 0;
-}
-
-static void atl1c_disable_l0s_l1(struct atl1c_hw *hw)
-{
- u32 pm_ctrl_data;
-
- AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data);
- pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK <<
- PM_CTRL_L1_ENTRY_TIMER_SHIFT);
- pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1;
- pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;
- pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN;
- pm_ctrl_data &= ~PM_CTRL_MAC_ASPM_CHK;
- pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1;
-
- pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN;
- pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN;
- pm_ctrl_data |= PM_CTRL_SERDES_L1_EN;
- AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data);
-}
-
-/*
- * Set ASPM state.
- * Enable/disable L0s/L1 depend on link state.
- */
-static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup)
-{
- u32 pm_ctrl_data;
-
- AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data);
-
- pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1;
- pm_ctrl_data &= ~(PM_CTRL_L1_ENTRY_TIMER_MASK <<
- PM_CTRL_L1_ENTRY_TIMER_SHIFT);
-
- pm_ctrl_data |= PM_CTRL_MAC_ASPM_CHK;
-
- if (linkup) {
- pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN;
- pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1;
-
- pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN;
- pm_ctrl_data |= PM_CTRL_SERDES_L1_EN;
- } else {
- pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN;
- pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN;
- pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;
- pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN;
-
- pm_ctrl_data |= PM_CTRL_CLK_SWH_L1;
-
- if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT)
- pm_ctrl_data |= PM_CTRL_ASPM_L1_EN;
- else
- pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN;
- }
-
- AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data);
-}
-
-static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
- u32 mac_ctrl_data;
-
- mac_ctrl_data = MAC_CTRL_TX_EN | MAC_CTRL_RX_EN;
- mac_ctrl_data |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
-
- if (adapter->link_duplex == FULL_DUPLEX) {
- hw->mac_duplex = true;
- mac_ctrl_data |= MAC_CTRL_DUPLX;
- }
-
- if (adapter->link_speed == SPEED_1000)
- hw->mac_speed = atl1c_mac_speed_1000;
- else
- hw->mac_speed = atl1c_mac_speed_10_100;
-
- mac_ctrl_data |= (hw->mac_speed & MAC_CTRL_SPEED_MASK) <<
- MAC_CTRL_SPEED_SHIFT;
-
- mac_ctrl_data |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
- mac_ctrl_data |= ((hw->preamble_len & MAC_CTRL_PRMLEN_MASK) <<
- MAC_CTRL_PRMLEN_SHIFT);
-
- if (adapter->vlgrp)
- mac_ctrl_data |= MAC_CTRL_RMV_VLAN;
-
- mac_ctrl_data |= MAC_CTRL_BC_EN;
- if (netdev->flags & IFF_PROMISC)
- mac_ctrl_data |= MAC_CTRL_PROMIS_EN;
- if (netdev->flags & IFF_ALLMULTI)
- mac_ctrl_data |= MAC_CTRL_MC_ALL_EN;
-
- mac_ctrl_data |= MAC_CTRL_SINGLE_PAUSE_EN;
- AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
-}
-
-/*
- * atl1c_configure - Configure Transmit&Receive Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Tx /Rx unit of the MAC after a reset.
- */
-static int atl1c_configure(struct atl1c_adapter *adapter)
-{
- struct atl1c_hw *hw = &adapter->hw;
- u32 master_ctrl_data = 0;
- u32 intr_modrt_data;
-
- /* clear interrupt status */
- AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF);
- /* Clear any WOL status */
- AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
- /* set Interrupt Clear Timer
- * HW will enable self to assert interrupt event to system after
- * waiting x-time for software to notify it accept interrupt.
- */
- AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER,
- hw->ict & INT_RETRIG_TIMER_MASK);
-
- atl1c_configure_des_ring(adapter);
-
- if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) {
- intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) <<
- IRQ_MODRT_TX_TIMER_SHIFT;
- intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) <<
- IRQ_MODRT_RX_TIMER_SHIFT;
- AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data);
- master_ctrl_data |=
- MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN;
- }
-
- if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ)
- master_ctrl_data |= MASTER_CTRL_INT_RDCLR;
-
- AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data);
-
- if (hw->ctrl_flags & ATL1C_CMB_ENABLE) {
- AT_WRITE_REG(hw, REG_CMB_TPD_THRESH,
- hw->cmb_tpd & CMB_TPD_THRESH_MASK);
- AT_WRITE_REG(hw, REG_CMB_TX_TIMER,
- hw->cmb_tx_timer & CMB_TX_TIMER_MASK);
- }
-
- if (hw->ctrl_flags & ATL1C_SMB_ENABLE)
- AT_WRITE_REG(hw, REG_SMB_STAT_TIMER,
- hw->smb_timer & SMB_STAT_TIMER_MASK);
- /* set MTU */
- AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN +
- VLAN_HLEN + ETH_FCS_LEN);
- /* HDS, disable */
- AT_WRITE_REG(hw, REG_HDS_CTRL, 0);
-
- atl1c_configure_tx(adapter);
- atl1c_configure_rx(adapter);
- atl1c_configure_rss(adapter);
- atl1c_configure_dma(adapter);
-
- return 0;
-}
-
-static void atl1c_update_hw_stats(struct atl1c_adapter *adapter)
-{
- u16 hw_reg_addr = 0;
- unsigned long *stats_item = NULL;
- u32 data;
-
- /* update rx status */
- hw_reg_addr = REG_MAC_RX_STATUS_BIN;
- stats_item = &adapter->hw_stats.rx_ok;
- while (hw_reg_addr <= REG_MAC_RX_STATUS_END) {
- AT_READ_REG(&adapter->hw, hw_reg_addr, &data);
- *stats_item += data;
- stats_item++;
- hw_reg_addr += 4;
- }
-/* update tx status */
- hw_reg_addr = REG_MAC_TX_STATUS_BIN;
- stats_item = &adapter->hw_stats.tx_ok;
- while (hw_reg_addr <= REG_MAC_TX_STATUS_END) {
- AT_READ_REG(&adapter->hw, hw_reg_addr, &data);
- *stats_item += data;
- stats_item++;
- hw_reg_addr += 4;
- }
-}
-
-/*
- * atl1c_get_stats - Get System Network Statistics
- * @netdev: network interface device structure
- *
- * Returns the address of the device statistics structure.
- * The statistics are actually updated from the timer callback.
- */
-static struct net_device_stats *atl1c_get_stats(struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct atl1c_hw_stats *hw_stats = &adapter->hw_stats;
- struct net_device_stats *net_stats = &adapter->net_stats;
-
- atl1c_update_hw_stats(adapter);
- net_stats->rx_packets = hw_stats->rx_ok;
- net_stats->tx_packets = hw_stats->tx_ok;
- net_stats->rx_bytes = hw_stats->rx_byte_cnt;
- net_stats->tx_bytes = hw_stats->tx_byte_cnt;
- net_stats->multicast = hw_stats->rx_mcast;
- net_stats->collisions = hw_stats->tx_1_col +
- hw_stats->tx_2_col * 2 +
- hw_stats->tx_late_col + hw_stats->tx_abort_col;
- net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err +
- hw_stats->rx_len_err + hw_stats->rx_sz_ov +
- hw_stats->rx_rrd_ov + hw_stats->rx_align_err;
- net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov;
- net_stats->rx_length_errors = hw_stats->rx_len_err;
- net_stats->rx_crc_errors = hw_stats->rx_fcs_err;
- net_stats->rx_frame_errors = hw_stats->rx_align_err;
- net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov;
-
- net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov;
-
- net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col +
- hw_stats->tx_underrun + hw_stats->tx_trunc;
- net_stats->tx_fifo_errors = hw_stats->tx_underrun;
- net_stats->tx_aborted_errors = hw_stats->tx_abort_col;
- net_stats->tx_window_errors = hw_stats->tx_late_col;
-
- return &adapter->net_stats;
-}
-
-static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter)
-{
- u16 phy_data;
-
- spin_lock(&adapter->mdio_lock);
- atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data);
- spin_unlock(&adapter->mdio_lock);
-}
-
-static bool atl1c_clean_tx_irq(struct atl1c_adapter *adapter,
- enum atl1c_trans_queue type)
-{
- struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *)
- &adapter->tpd_ring[type];
- struct atl1c_buffer *buffer_info;
- u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
- u16 hw_next_to_clean;
- u16 shift;
- u32 data;
-
- if (type == atl1c_trans_high)
- shift = MB_HTPD_CONS_IDX_SHIFT;
- else
- shift = MB_NTPD_CONS_IDX_SHIFT;
-
- AT_READ_REG(&adapter->hw, REG_MB_PRIO_CONS_IDX, &data);
- hw_next_to_clean = (data >> shift) & MB_PRIO_PROD_IDX_MASK;
-
- while (next_to_clean != hw_next_to_clean) {
- buffer_info = &tpd_ring->buffer_info[next_to_clean];
- if (buffer_info->state == ATL1_BUFFER_BUSY) {
- pci_unmap_page(adapter->pdev, buffer_info->dma,
- buffer_info->length, PCI_DMA_TODEVICE);
- buffer_info->dma = 0;
- if (buffer_info->skb) {
- dev_kfree_skb_irq(buffer_info->skb);
- buffer_info->skb = NULL;
- }
- buffer_info->state = ATL1_BUFFER_FREE;
- }
- if (++next_to_clean == tpd_ring->count)
- next_to_clean = 0;
- atomic_set(&tpd_ring->next_to_clean, next_to_clean);
- }
-
- if (netif_queue_stopped(adapter->netdev) &&
- netif_carrier_ok(adapter->netdev)) {
- netif_wake_queue(adapter->netdev);
- }
-
- return true;
-}
-
-/*
- * atl1c_intr - Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- * @pt_regs: CPU registers structure
- */
-static irqreturn_t atl1c_intr(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct pci_dev *pdev = adapter->pdev;
- struct atl1c_hw *hw = &adapter->hw;
- int max_ints = AT_MAX_INT_WORK;
- int handled = IRQ_NONE;
- u32 status;
- u32 reg_data;
-
- do {
- AT_READ_REG(hw, REG_ISR, ®_data);
- status = reg_data & hw->intr_mask;
-
- if (status == 0 || (status & ISR_DIS_INT) != 0) {
- if (max_ints != AT_MAX_INT_WORK)
- handled = IRQ_HANDLED;
- break;
- }
- /* link event */
- if (status & ISR_GPHY)
- atl1c_clear_phy_int(adapter);
- /* Ack ISR */
- AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT);
- if (status & ISR_RX_PKT) {
- if (likely(napi_schedule_prep(&adapter->napi))) {
- hw->intr_mask &= ~ISR_RX_PKT;
- AT_WRITE_REG(hw, REG_IMR, hw->intr_mask);
- __napi_schedule(&adapter->napi);
- }
- }
- if (status & ISR_TX_PKT)
- atl1c_clean_tx_irq(adapter, atl1c_trans_normal);
-
- handled = IRQ_HANDLED;
- /* check if PCIE PHY Link down */
- if (status & ISR_ERROR) {
- if (netif_msg_hw(adapter))
- dev_err(&pdev->dev,
- "atl1c hardware error (status = 0x%x)\n",
- status & ISR_ERROR);
- /* reset MAC */
- hw->intr_mask &= ~ISR_ERROR;
- AT_WRITE_REG(hw, REG_IMR, hw->intr_mask);
- schedule_work(&adapter->reset_task);
- break;
- }
-
- if (status & ISR_OVER)
- if (netif_msg_intr(adapter))
- dev_warn(&pdev->dev,
- "TX/RX over flow (status = 0x%x)\n",
- status & ISR_OVER);
-
- /* link event */
- if (status & (ISR_GPHY | ISR_MANUAL)) {
- adapter->net_stats.tx_carrier_errors++;
- atl1c_link_chg_event(adapter);
- break;
- }
-
- } while (--max_ints > 0);
- /* re-enable Interrupt*/
- AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
- return handled;
-}
-
-static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter,
- struct sk_buff *skb, struct atl1c_recv_ret_status *prrs)
-{
- /*
- * The pid field in RRS in not correct sometimes, so we
- * cannot figure out if the packet is fragmented or not,
- * so we tell the KERNEL CHECKSUM_NONE
- */
- skb->ip_summed = CHECKSUM_NONE;
-}
-
-static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, const int ringid)
-{
- struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[ringid];
- struct pci_dev *pdev = adapter->pdev;
- struct atl1c_buffer *buffer_info, *next_info;
- struct sk_buff *skb;
- void *vir_addr = NULL;
- u16 num_alloc = 0;
- u16 rfd_next_to_use, next_next;
- struct atl1c_rx_free_desc *rfd_desc;
-
- next_next = rfd_next_to_use = rfd_ring->next_to_use;
- if (++next_next == rfd_ring->count)
- next_next = 0;
- buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
- next_info = &rfd_ring->buffer_info[next_next];
-
- while (next_info->state == ATL1_BUFFER_FREE) {
- rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use);
-
- skb = dev_alloc_skb(adapter->rx_buffer_len);
- if (unlikely(!skb)) {
- if (netif_msg_rx_err(adapter))
- dev_warn(&pdev->dev, "alloc rx buffer failed\n");
- break;
- }
-
- /*
- * Make buffer alignment 2 beyond a 16 byte boundary
- * this will result in a 16 byte aligned IP header after
- * the 14 byte MAC header is removed
- */
- vir_addr = skb->data;
- buffer_info->state = ATL1_BUFFER_BUSY;
- buffer_info->skb = skb;
- buffer_info->length = adapter->rx_buffer_len;
- buffer_info->dma = pci_map_single(pdev, vir_addr,
- buffer_info->length,
- PCI_DMA_FROMDEVICE);
- rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
- rfd_next_to_use = next_next;
- if (++next_next == rfd_ring->count)
- next_next = 0;
- buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
- next_info = &rfd_ring->buffer_info[next_next];
- num_alloc++;
- }
-
- if (num_alloc) {
- /* TODO: update mailbox here */
- wmb();
- rfd_ring->next_to_use = rfd_next_to_use;
- AT_WRITE_REG(&adapter->hw, atl1c_rfd_prod_idx_regs[ringid],
- rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK);
- }
-
- return num_alloc;
-}
-
-static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring,
- struct atl1c_recv_ret_status *rrs, u16 num)
-{
- u16 i;
- /* the relationship between rrd and rfd is one map one */
- for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring,
- rrd_ring->next_to_clean)) {
- rrs->word3 &= ~RRS_RXD_UPDATED;
- if (++rrd_ring->next_to_clean == rrd_ring->count)
- rrd_ring->next_to_clean = 0;
- }
-}
-
-static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring,
- struct atl1c_recv_ret_status *rrs, u16 num)
-{
- u16 i;
- u16 rfd_index;
- struct atl1c_buffer *buffer_info = rfd_ring->buffer_info;
-
- rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) &
- RRS_RX_RFD_INDEX_MASK;
- for (i = 0; i < num; i++) {
- buffer_info[rfd_index].skb = NULL;
- buffer_info[rfd_index].state = ATL1_BUFFER_FREE;
- if (++rfd_index == rfd_ring->count)
- rfd_index = 0;
- }
- rfd_ring->next_to_clean = rfd_index;
-}
-
-static void atl1c_clean_rx_irq(struct atl1c_adapter *adapter, u8 que,
- int *work_done, int work_to_do)
-{
- u16 rfd_num, rfd_index;
- u16 count = 0;
- u16 length;
- struct pci_dev *pdev = adapter->pdev;
- struct net_device *netdev = adapter->netdev;
- struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[que];
- struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring[que];
- struct sk_buff *skb;
- struct atl1c_recv_ret_status *rrs;
- struct atl1c_buffer *buffer_info;
-
- while (1) {
- if (*work_done >= work_to_do)
- break;
- rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean);
- if (likely(RRS_RXD_IS_VALID(rrs->word3))) {
- rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) &
- RRS_RX_RFD_CNT_MASK;
- if (unlikely(rfd_num != 1))
- /* TODO support mul rfd*/
- if (netif_msg_rx_err(adapter))
- dev_warn(&pdev->dev,
- "Multi rfd not support yet!\n");
- goto rrs_checked;
- } else {
- break;
- }
-rrs_checked:
- atl1c_clean_rrd(rrd_ring, rrs, rfd_num);
- if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) {
- atl1c_clean_rfd(rfd_ring, rrs, rfd_num);
- if (netif_msg_rx_err(adapter))
- dev_warn(&pdev->dev,
- "wrong packet! rrs word3 is %x\n",
- rrs->word3);
- continue;
- }
-
- length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) &
- RRS_PKT_SIZE_MASK);
- /* Good Receive */
- if (likely(rfd_num == 1)) {
- rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) &
- RRS_RX_RFD_INDEX_MASK;
- buffer_info = &rfd_ring->buffer_info[rfd_index];
- pci_unmap_single(pdev, buffer_info->dma,
- buffer_info->length, PCI_DMA_FROMDEVICE);
- skb = buffer_info->skb;
- } else {
- /* TODO */
- if (netif_msg_rx_err(adapter))
- dev_warn(&pdev->dev,
- "Multi rfd not support yet!\n");
- break;
- }
- atl1c_clean_rfd(rfd_ring, rrs, rfd_num);
- skb_put(skb, length - ETH_FCS_LEN);
- skb->protocol = eth_type_trans(skb, netdev);
- skb->dev = netdev;
- atl1c_rx_checksum(adapter, skb, rrs);
- if (unlikely(adapter->vlgrp) && rrs->word3 & RRS_VLAN_INS) {
- u16 vlan;
-
- AT_TAG_TO_VLAN(rrs->vlan_tag, vlan);
- vlan = le16_to_cpu(vlan);
- vlan_hwaccel_receive_skb(skb, adapter->vlgrp, vlan);
- } else
- netif_receive_skb(skb);
-
- netdev->last_rx = jiffies;
- (*work_done)++;
- count++;
- }
- if (count)
- atl1c_alloc_rx_buffer(adapter, que);
-}
-
-/*
- * atl1c_clean - NAPI Rx polling callback
- * @adapter: board private structure
- */
-static int atl1c_clean(struct napi_struct *napi, int budget)
-{
- struct atl1c_adapter *adapter =
- container_of(napi, struct atl1c_adapter, napi);
- int work_done = 0;
-
- /* Keep link state information with original netdev */
- if (!netif_carrier_ok(adapter->netdev))
- goto quit_polling;
- /* just enable one RXQ */
- atl1c_clean_rx_irq(adapter, 0, &work_done, budget);
-
- if (work_done < budget) {
-quit_polling:
- napi_complete(napi);
- adapter->hw.intr_mask |= ISR_RX_PKT;
- AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask);
- }
- return work_done;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-
-/*
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
- */
-static void atl1c_netpoll(struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- disable_irq(adapter->pdev->irq);
- atl1c_intr(adapter->pdev->irq, netdev);
- enable_irq(adapter->pdev->irq);
-}
-#endif
-
-static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, enum atl1c_trans_queue type)
-{
- struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type];
- u16 next_to_use = 0;
- u16 next_to_clean = 0;
-
- next_to_clean = atomic_read(&tpd_ring->next_to_clean);
- next_to_use = tpd_ring->next_to_use;
-
- return (u16)(next_to_clean > next_to_use) ?
- (next_to_clean - next_to_use - 1) :
- (tpd_ring->count + next_to_clean - next_to_use - 1);
-}
-
-/*
- * get next usable tpd
- * Note: should call atl1c_tdp_avail to make sure
- * there is enough tpd to use
- */
-static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter,
- enum atl1c_trans_queue type)
-{
- struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type];
- struct atl1c_tpd_desc *tpd_desc;
- u16 next_to_use = 0;
-
- next_to_use = tpd_ring->next_to_use;
- if (++tpd_ring->next_to_use == tpd_ring->count)
- tpd_ring->next_to_use = 0;
- tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use);
- memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc));
- return tpd_desc;
-}
-
-static struct atl1c_buffer *
-atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd)
-{
- struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
-
- return &tpd_ring->buffer_info[tpd -
- (struct atl1c_tpd_desc *)tpd_ring->desc];
-}
-
-/* Calculate the transmit packet descript needed*/
-static u16 atl1c_cal_tpd_req(const struct sk_buff *skb)
-{
- u16 tpd_req;
- u16 proto_hdr_len = 0;
-
- tpd_req = skb_shinfo(skb)->nr_frags + 1;
-
- if (skb_is_gso(skb)) {
- proto_hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
- if (proto_hdr_len < skb_headlen(skb))
- tpd_req++;
- if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
- tpd_req++;
- }
- return tpd_req;
-}
-
-static int atl1c_tso_csum(struct atl1c_adapter *adapter,
- struct sk_buff *skb,
- struct atl1c_tpd_desc **tpd,
- enum atl1c_trans_queue type)
-{
- struct pci_dev *pdev = adapter->pdev;
- u8 hdr_len;
- u32 real_len;
- unsigned short offload_type;
- int err;
-
- if (skb_is_gso(skb)) {
- if (skb_header_cloned(skb)) {
- err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
- if (unlikely(err))
- return -1;
- }
- offload_type = skb_shinfo(skb)->gso_type;
-
- if (offload_type & SKB_GSO_TCPV4) {
- real_len = (((unsigned char *)ip_hdr(skb) - skb->data)
- + ntohs(ip_hdr(skb)->tot_len));
-
- if (real_len < skb->len)
- pskb_trim(skb, real_len);
-
- hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
- if (unlikely(skb->len == hdr_len)) {
- /* only xsum need */
- if (netif_msg_tx_queued(adapter))
- dev_warn(&pdev->dev,
- "IPV4 tso with zero data??\n");
- goto check_sum;
- } else {
- ip_hdr(skb)->check = 0;
- tcp_hdr(skb)->check = ~csum_tcpudp_magic(
- ip_hdr(skb)->saddr,
- ip_hdr(skb)->daddr,
- 0, IPPROTO_TCP, 0);
- (*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT;
- }
- }
-
- if (offload_type & SKB_GSO_TCPV6) {
- struct atl1c_tpd_ext_desc *etpd =
- *(struct atl1c_tpd_ext_desc **)(tpd);
-
- memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc));
- *tpd = atl1c_get_tpd(adapter, type);
- ipv6_hdr(skb)->payload_len = 0;
- /* check payload == 0 byte ? */
- hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
- if (unlikely(skb->len == hdr_len)) {
- /* only xsum need */
- if (netif_msg_tx_queued(adapter))
- dev_warn(&pdev->dev,
- "IPV6 tso with zero data??\n");
- goto check_sum;
- } else
- tcp_hdr(skb)->check = ~csum_ipv6_magic(
- &ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- 0, IPPROTO_TCP, 0);
- etpd->word1 |= 1 << TPD_LSO_EN_SHIFT;
- etpd->word1 |= 1 << TPD_LSO_VER_SHIFT;
- etpd->pkt_len = cpu_to_le32(skb->len);
- (*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT;
- }
-
- (*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT;
- (*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) <<
- TPD_TCPHDR_OFFSET_SHIFT;
- (*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) <<
- TPD_MSS_SHIFT;
- return 0;
- }
-
-check_sum:
- if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
- u8 css, cso;
- cso = skb_transport_offset(skb);
-
- if (unlikely(cso & 0x1)) {
- if (netif_msg_tx_err(adapter))
- dev_err(&adapter->pdev->dev,
- "payload offset should not an event number\n");
- return -1;
- } else {
- css = cso + skb->csum_offset;
-
- (*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) <<
- TPD_PLOADOFFSET_SHIFT;
- (*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) <<
- TPD_CCSUM_OFFSET_SHIFT;
- (*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT;
- }
- }
- return 0;
-}
-
-static void atl1c_tx_map(struct atl1c_adapter *adapter,
- struct sk_buff *skb, struct atl1c_tpd_desc *tpd,
- enum atl1c_trans_queue type)
-{
- struct atl1c_tpd_desc *use_tpd = NULL;
- struct atl1c_buffer *buffer_info = NULL;
- u16 buf_len = skb_headlen(skb);
- u16 map_len = 0;
- u16 mapped_len = 0;
- u16 hdr_len = 0;
- u16 nr_frags;
- u16 f;
- int tso;
-
- nr_frags = skb_shinfo(skb)->nr_frags;
- tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK;
- if (tso) {
- /* TSO */
- map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
- use_tpd = tpd;
-
- buffer_info = atl1c_get_tx_buffer(adapter, use_tpd);
- buffer_info->length = map_len;
- buffer_info->dma = pci_map_single(adapter->pdev,
- skb->data, hdr_len, PCI_DMA_TODEVICE);
- buffer_info->state = ATL1_BUFFER_BUSY;
- mapped_len += map_len;
- use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
- use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
- }
-
- if (mapped_len < buf_len) {
- /* mapped_len == 0, means we should use the first tpd,
- which is given by caller */
- if (mapped_len == 0)
- use_tpd = tpd;
- else {
- use_tpd = atl1c_get_tpd(adapter, type);
- memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc));
- use_tpd = atl1c_get_tpd(adapter, type);
- memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc));
- }
- buffer_info = atl1c_get_tx_buffer(adapter, use_tpd);
- buffer_info->length = buf_len - mapped_len;
- buffer_info->dma =
- pci_map_single(adapter->pdev, skb->data + mapped_len,
- buffer_info->length, PCI_DMA_TODEVICE);
- buffer_info->state = ATL1_BUFFER_BUSY;
-
- use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
- use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
- }
-
- for (f = 0; f < nr_frags; f++) {
- struct skb_frag_struct *frag;
-
- frag = &skb_shinfo(skb)->frags[f];
-
- use_tpd = atl1c_get_tpd(adapter, type);
- memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc));
-
- buffer_info = atl1c_get_tx_buffer(adapter, use_tpd);
- buffer_info->length = frag->size;
- buffer_info->dma =
- pci_map_page(adapter->pdev, frag->page,
- frag->page_offset,
- buffer_info->length,
- PCI_DMA_TODEVICE);
- buffer_info->state = ATL1_BUFFER_BUSY;
-
- use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
- use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
- }
-
- /* The last tpd */
- use_tpd->word1 |= 1 << TPD_EOP_SHIFT;
- /* The last buffer info contain the skb address,
- so it will be free after unmap */
- buffer_info->skb = skb;
-}
-
-static void atl1c_tx_queue(struct atl1c_adapter *adapter, struct sk_buff *skb,
- struct atl1c_tpd_desc *tpd, enum atl1c_trans_queue type)
-{
- struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[type];
- u32 prod_data;
-
- AT_READ_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, &prod_data);
- switch (type) {
- case atl1c_trans_high:
- prod_data &= 0xFFFF0000;
- prod_data |= tpd_ring->next_to_use & 0xFFFF;
- break;
- case atl1c_trans_normal:
- prod_data &= 0x0000FFFF;
- prod_data |= (tpd_ring->next_to_use & 0xFFFF) << 16;
- break;
- default:
- break;
- }
- wmb();
- AT_WRITE_REG(&adapter->hw, REG_MB_PRIO_PROD_IDX, prod_data);
-}
-
-static int atl1c_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- unsigned long flags;
- u16 tpd_req = 1;
- struct atl1c_tpd_desc *tpd;
- enum atl1c_trans_queue type = atl1c_trans_normal;
-
- if (test_bit(__AT_DOWN, &adapter->flags)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- tpd_req = atl1c_cal_tpd_req(skb);
- if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) {
- if (netif_msg_pktdata(adapter))
- dev_info(&adapter->pdev->dev, "tx locked\n");
- return NETDEV_TX_LOCKED;
- }
- if (skb->mark == 0x01)
- type = atl1c_trans_high;
- else
- type = atl1c_trans_normal;
-
- if (atl1c_tpd_avail(adapter, type) < tpd_req) {
- /* no enough descriptor, just stop queue */
- netif_stop_queue(netdev);
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
- return NETDEV_TX_BUSY;
- }
-
- tpd = atl1c_get_tpd(adapter, type);
-
- /* do TSO and check sum */
- if (atl1c_tso_csum(adapter, skb, &tpd, type) != 0) {
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
-
- if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
- u16 vlan = vlan_tx_tag_get(skb);
- __le16 tag;
-
- vlan = cpu_to_le16(vlan);
- AT_VLAN_TO_TAG(vlan, tag);
- tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT;
- tpd->vlan_tag = tag;
- }
-
- if (skb_network_offset(skb) != ETH_HLEN)
- tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */
-
- atl1c_tx_map(adapter, skb, tpd, type);
- atl1c_tx_queue(adapter, skb, tpd, type);
-
- spin_unlock_irqrestore(&adapter->tx_lock, flags);
- return NETDEV_TX_OK;
-}
-
-static void atl1c_free_irq(struct atl1c_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
-
- free_irq(adapter->pdev->irq, netdev);
-
- if (adapter->have_msi)
- pci_disable_msi(adapter->pdev);
-}
-
-static int atl1c_request_irq(struct atl1c_adapter *adapter)
-{
- struct pci_dev *pdev = adapter->pdev;
- struct net_device *netdev = adapter->netdev;
- int flags = 0;
- int err = 0;
-
- adapter->have_msi = true;
- err = pci_enable_msi(adapter->pdev);
- if (err) {
- if (netif_msg_ifup(adapter))
- dev_err(&pdev->dev,
- "Unable to allocate MSI interrupt Error: %d\n",
- err);
- adapter->have_msi = false;
- } else
- netdev->irq = pdev->irq;
-
- if (!adapter->have_msi)
- flags |= IRQF_SHARED;
- err = request_irq(adapter->pdev->irq, &atl1c_intr, flags,
- netdev->name, netdev);
- if (err) {
- if (netif_msg_ifup(adapter))
- dev_err(&pdev->dev,
- "Unable to allocate interrupt Error: %d\n",
- err);
- if (adapter->have_msi)
- pci_disable_msi(adapter->pdev);
- return err;
- }
- if (netif_msg_ifup(adapter))
- dev_dbg(&pdev->dev, "atl1c_request_irq OK\n");
- return err;
-}
-
-int atl1c_up(struct atl1c_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int num;
- int err;
- int i;
-
- netif_carrier_off(netdev);
- atl1c_init_ring_ptrs(adapter);
- atl1c_set_multi(netdev);
- atl1c_restore_vlan(adapter);
-
- for (i = 0; i < adapter->num_rx_queues; i++) {
- num = atl1c_alloc_rx_buffer(adapter, i);
- if (unlikely(num == 0)) {
- err = -ENOMEM;
- goto err_alloc_rx;
- }
- }
-
- if (atl1c_configure(adapter)) {
- err = -EIO;
- goto err_up;
- }
-
- err = atl1c_request_irq(adapter);
- if (unlikely(err))
- goto err_up;
-
- clear_bit(__AT_DOWN, &adapter->flags);
- napi_enable(&adapter->napi);
- atl1c_irq_enable(adapter);
- atl1c_check_link_status(adapter);
- netif_start_queue(netdev);
- return err;
-
-err_up:
-err_alloc_rx:
- atl1c_clean_rx_ring(adapter);
- return err;
-}
-
-void atl1c_down(struct atl1c_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
-
- atl1c_del_timer(adapter);
- atl1c_cancel_work(adapter);
-
- /* signal that we're down so the interrupt handler does not
- * reschedule our watchdog timer */
- set_bit(__AT_DOWN, &adapter->flags);
- netif_carrier_off(netdev);
- napi_disable(&adapter->napi);
- atl1c_irq_disable(adapter);
- atl1c_free_irq(adapter);
- AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT);
- /* reset MAC to disable all RX/TX */
- atl1c_reset_mac(&adapter->hw);
- msleep(1);
-
- adapter->link_speed = SPEED_0;
- adapter->link_duplex = -1;
- atl1c_clean_tx_ring(adapter, atl1c_trans_normal);
- atl1c_clean_tx_ring(adapter, atl1c_trans_high);
- atl1c_clean_rx_ring(adapter);
-}
-
-/*
- * atl1c_open - Called when a network interface is made active
- * @netdev: network interface device structure
- *
- * Returns 0 on success, negative value on failure
- *
- * The open entry point is called when a network interface is made
- * active by the system (IFF_UP). At this point all resources needed
- * for transmit and receive operations are allocated, the interrupt
- * handler is registered with the OS, the watchdog timer is started,
- * and the stack is notified that the interface is ready.
- */
-static int atl1c_open(struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- int err;
-
- /* disallow open during test */
- if (test_bit(__AT_TESTING, &adapter->flags))
- return -EBUSY;
-
- /* allocate rx/tx dma buffer & descriptors */
- err = atl1c_setup_ring_resources(adapter);
- if (unlikely(err))
- return err;
-
- err = atl1c_up(adapter);
- if (unlikely(err))
- goto err_up;
-
- if (adapter->hw.ctrl_flags & ATL1C_FPGA_VERSION) {
- u32 phy_data;
-
- AT_READ_REG(&adapter->hw, REG_MDIO_CTRL, &phy_data);
- phy_data |= MDIO_AP_EN;
- AT_WRITE_REG(&adapter->hw, REG_MDIO_CTRL, phy_data);
- }
- return 0;
-
-err_up:
- atl1c_free_irq(adapter);
- atl1c_free_ring_resources(adapter);
- atl1c_reset_mac(&adapter->hw);
- return err;
-}
-
-/*
- * atl1c_close - Disables a network interface
- * @netdev: network interface device structure
- *
- * Returns 0, this is not allowed to fail
- *
- * The close entry point is called when an interface is de-activated
- * by the OS. The hardware is still under the drivers control, but
- * needs to be disabled. A global MAC reset is issued to stop the
- * hardware, and all transmit and receive resources are freed.
- */
-static int atl1c_close(struct net_device *netdev)
-{
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
- atl1c_down(adapter);
- atl1c_free_ring_resources(adapter);
- return 0;
-}
-
-static int atl1c_suspend(struct pci_dev *pdev, pm_message_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct atl1c_adapter *adapter = netdev_priv(netdev);
- struct atl1c_hw *hw = &adapter->hw;
- u32 ctrl;
- u32 mac_ctrl_data;
- u32 master_ctrl_data;
- u32 wol_ctrl_data;
- u16 mii_bmsr_data;
- u16 save_autoneg_advertised;
- u16 mii_intr_status_data;
- u32 wufc = adapter->wol;
- u32 i;
- int retval = 0;
-
- if (netif_running(netdev)) {
- WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
- atl1c_down(adapter);
- }
- netif_device_detach(netdev);
- atl1c_disable_l0s_l1(hw);
- retval = pci_save_state(pdev);
- if (retval)
- return retval;
- if (wufc) {
- AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data);
- master_ctrl_data &= ~MASTER_CTRL_CLK_SEL_DIS;
-
- /* get link status */
- atl1c_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data);
- atl1c_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data);
- save_autoneg_advertised = hw->autoneg_advertised;
- hw->autoneg_advertised = ADVERTISED_10baseT_Half;
- if (atl1c_restart_autoneg(hw) != 0)
- if (netif_msg_link(adapter))
- dev_warn(&pdev->dev, "phy autoneg failed\n");
- hw->phy_configured = false; /* re-init PHY when resume */
- hw->autoneg_advertised = save_autoneg_advertised;
- /* turn on magic packet wol */
- if (wufc & AT_WUFC_MAG)
- wol_ctrl_data = WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
-
- if (wufc & AT_WUFC_LNKC) {
- for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) {
- msleep(100);
- atl1c_read_phy_reg(hw, MII_BMSR,
- (u16 *)&mii_bmsr_data);
- if (mii_bmsr_data & BMSR_LSTATUS)
- break;
- }
- if ((mii_bmsr_data & BMSR_LSTATUS) == 0)
- if (netif_msg_link(adapter))
- dev_warn(&pdev->dev,
- "%s: Link may change"
- "when suspend\n",
- atl1c_driver_name);
- wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN;
- /* only link up can wake up */
- if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) {
- if (netif_msg_link(adapter))
- dev_err(&pdev->dev,
- "%s: read write phy "
- "register failed.\n",
- atl1c_driver_name);
- goto wol_dis;
- }
- }
- /* clear phy interrupt */
- atl1c_read_phy_reg(hw, MII_ISR, &mii_intr_status_data);
- /* Config MAC Ctrl register */
- mac_ctrl_data = MAC_CTRL_RX_EN;
- /* set to 10/100M halt duplex */
- mac_ctrl_data |= atl1c_mac_speed_10_100 << MAC_CTRL_SPEED_SHIFT;
- mac_ctrl_data |= (((u32)adapter->hw.preamble_len &
- MAC_CTRL_PRMLEN_MASK) <<
- MAC_CTRL_PRMLEN_SHIFT);
-
- if (adapter->vlgrp)
- mac_ctrl_data |= MAC_CTRL_RMV_VLAN;
-
- /* magic packet maybe Broadcast&multicast&Unicast frame */
- if (wufc & AT_WUFC_MAG)
- mac_ctrl_data |= MAC_CTRL_BC_EN;
-
- if (netif_msg_hw(adapter))
- dev_dbg(&pdev->dev,
- "%s: suspend MAC=0x%x\n",
- atl1c_driver_name, mac_ctrl_data);
- AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data);
- AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data);
- AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
-
- /* pcie patch */
- AT_READ_REG(hw, REG_PCIE_PHYMISC, &ctrl);
- ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
- AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
-
- pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
- goto suspend_exit;
- }
-wol_dis:
-
- /* WOL disabled */
- AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
-
- /* pcie patch */
- AT_READ_REG(hw, REG_PCIE_PHYMISC, &ctrl);
- ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
- AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
-
- atl1c_phy_disable(hw);
- hw->phy_configured = false; /* re-init PHY when resume */
-
- pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
-suspend_exit:
-
- pci_disable_device(pdev);
- pci_set_power_state(pdev, pci_choose_state(pdev, state));
-
- return 0;
-}
-
-static int atl1c_resume(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0);
-
- atl1c_phy_reset(&adapter->hw);
- atl1c_reset_mac(&adapter->hw);
- netif_device_attach(netdev);
- if (netif_running(netdev))
- atl1c_up(adapter);
-
- return 0;
-}
-
-static void atl1c_shutdown(struct pci_dev *pdev)
-{
- atl1c_suspend(pdev, PMSG_SUSPEND);
-}
-
-#ifdef HAVE_NET_DEVICE_OPS
-static const struct net_device_ops atl1c_netdev_ops = {
- .ndo_open = atl1c_open,
- .ndo_stop = atl1c_close,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_start_xmit = atl1c_xmit_frame,
- .ndo_set_mac_address = atl1c_set_mac_addr,
- .ndo_set_multicast_list = atl1c_set_multi,
- .ndo_change_mtu = atl1c_change_mtu,
- .ndo_do_ioctl = atl1c_ioctl,
- .ndo_tx_timeout = atl1c_tx_timeout,
- .ndo_get_stats = atl1c_get_stats,
- .ndo_vlan_rx_register = atl1c_vlan_rx_register,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = atl1c_netpoll,
-#endif /*HAVE_NET_DEVICE_OPS*/
-};
-#endif
-
-static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev)
-{
- SET_NETDEV_DEV(netdev, &pdev->dev);
- pci_set_drvdata(pdev, netdev);
-
- netdev->irq = pdev->irq;
-
-#ifdef HAVE_NET_DEVICE_OPS
- netdev->netdev_ops = &atl1c_netdev_ops;
-#else
- netdev->open = &atl1c_open;
- netdev->stop = &atl1c_close;
- netdev->hard_start_xmit = &atl1c_xmit_frame;
- netdev->set_mac_address = &atl1c_set_mac_addr;
- netdev->set_multicast_list = &atl1c_set_multi;
- netdev->change_mtu = &atl1c_change_mtu;
- netdev->do_ioctl = &atl1c_ioctl;
- netdev->tx_timeout = &atl1c_tx_timeout;
- netdev->get_stats = &atl1c_get_stats;
- netdev->vlan_rx_register = atl1c_vlan_rx_register;
-#endif /*HAVE_NET_DEVICE_OPS*/
-
- netdev->watchdog_timeo = AT_TX_WATCHDOG;
- atl1c_set_ethtool_ops(netdev);
-
- /* TODO: add when ready */
- netdev->features = NETIF_F_SG |
- NETIF_F_HW_CSUM |
- NETIF_F_HW_VLAN_TX |
- NETIF_F_HW_VLAN_RX |
- NETIF_F_TSO |
- NETIF_F_TSO6;
- return 0;
-}
-
-/*
- * atl1c_probe - Device Initialization Routine
- * @pdev: PCI device information struct
- * @ent: entry in atl1c_pci_tbl
- *
- * Returns 0 on success, negative on failure
- *
- * atl1c_probe initializes an adapter identified by a pci_dev structure.
- * The OS initialization, configuring of the adapter private structure,
- * and a hardware reset occur.
- */
-static int __devinit atl1c_probe(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *netdev;
- struct atl1c_adapter *adapter;
- static int cards_found;
-
- int err = 0;
-
- /* enable device (incl. PCI PM wakeup and hotplug setup) */
- err = pci_enable_device_mem(pdev);
- if (err) {
- dev_err(&pdev->dev, "cannot enable PCI device\n");
- return err;
- }
-
- /*
- * The atl1c chip can DMA to 64-bit addresses, but it uses a single
- * shared register for the high 32 bits, so only a single, aligned,
- * 4 GB physical address range can be used at a time.
- *
- * Supporting 64-bit DMA on this hardware is more trouble than it's
- * worth. It is far easier to limit to 32-bit DMA than update
- * various kernel subsystems to support the mechanics required by a
- * fixed-high-32-bit system.
- */
- if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) ||
- (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) {
- dev_err(&pdev->dev, "No usable DMA configuration,aborting\n");
- goto err_dma;
- }
-
- err = pci_request_regions(pdev, atl1c_driver_name);
- if (err) {
- dev_err(&pdev->dev, "cannot obtain PCI resources\n");
- goto err_pci_reg;
- }
-
- pci_set_master(pdev);
-
- netdev = alloc_etherdev(sizeof(struct atl1c_adapter));
- if (netdev == NULL) {
- err = -ENOMEM;
- dev_err(&pdev->dev, "etherdev alloc failed\n");
- goto err_alloc_etherdev;
- }
-
- err = atl1c_init_netdev(netdev, pdev);
- if (err) {
- dev_err(&pdev->dev, "init netdevice failed\n");
- goto err_init_netdev;
- }
- adapter = netdev_priv(netdev);
- adapter->bd_number = cards_found;
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- adapter->hw.adapter = adapter;
- adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg);
- adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
- if (!adapter->hw.hw_addr) {
- err = -EIO;
- dev_err(&pdev->dev, "cannot map device registers\n");
- goto err_ioremap;
- }
- netdev->base_addr = (unsigned long)adapter->hw.hw_addr;
-
- /* init mii data */
- adapter->mii.dev = netdev;
- adapter->mii.mdio_read = atl1c_mdio_read;
- adapter->mii.mdio_write = atl1c_mdio_write;
- adapter->mii.phy_id_mask = 0x1f;
- adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK;
- netif_napi_add(netdev, &adapter->napi, atl1c_clean, 64);
- setup_timer(&adapter->phy_config_timer, atl1c_phy_config,
- (unsigned long)adapter);
- /* setup the private structure */
- err = atl1c_sw_init(adapter);
- if (err) {
- dev_err(&pdev->dev, "net device private data init failed\n");
- goto err_sw_init;
- }
- atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE |
- ATL1C_PCIE_PHY_RESET);
-
- /* Init GPHY as early as possible due to power saving issue */
- atl1c_phy_reset(&adapter->hw);
-
- err = atl1c_reset_mac(&adapter->hw);
- if (err) {
- err = -EIO;
- goto err_reset;
- }
-
- device_init_wakeup(&pdev->dev, 1);
- /* reset the controller to
- * put the device in a known good starting state */
- err = atl1c_phy_init(&adapter->hw);
- if (err) {
- err = -EIO;
- goto err_reset;
- }
- if (atl1c_read_mac_addr(&adapter->hw) != 0) {
- err = -EIO;
- dev_err(&pdev->dev, "get mac address failed\n");
- goto err_eeprom;
- }
- memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
- memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
- if (netif_msg_probe(adapter))
- dev_dbg(&pdev->dev,
- "mac address : %02x-%02x-%02x-%02x-%02x-%02x\n",
- adapter->hw.mac_addr[0], adapter->hw.mac_addr[1],
- adapter->hw.mac_addr[2], adapter->hw.mac_addr[3],
- adapter->hw.mac_addr[4], adapter->hw.mac_addr[5]);
-
- atl1c_hw_set_mac_addr(&adapter->hw);
- INIT_WORK(&adapter->reset_task, atl1c_reset_task);
- INIT_WORK(&adapter->link_chg_task, atl1c_link_chg_task);
- err = register_netdev(netdev);
- if (err) {
- dev_err(&pdev->dev, "register netdevice failed\n");
- goto err_register;
- }
-
- if (netif_msg_probe(adapter))
- dev_info(&pdev->dev, "version %s\n", ATL1C_DRV_VERSION);
- cards_found++;
- return 0;
-
-err_reset:
-err_register:
-err_sw_init:
-err_eeprom:
- iounmap(adapter->hw.hw_addr);
-err_init_netdev:
-err_ioremap:
- free_netdev(netdev);
-err_alloc_etherdev:
- pci_release_regions(pdev);
-err_pci_reg:
-err_dma:
- pci_disable_device(pdev);
- return err;
-}
-
-/*
- * atl1c_remove - Device Removal Routine
- * @pdev: PCI device information struct
- *
- * atl1c_remove is called by the PCI subsystem to alert the driver
- * that it should release a PCI device. The could be caused by a
- * Hot-Plug event, or because the driver is going to be removed from
- * memory.
- */
-static void __devexit atl1c_remove(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- unregister_netdev(netdev);
- atl1c_phy_disable(&adapter->hw);
-
- iounmap(adapter->hw.hw_addr);
-
- pci_release_regions(pdev);
- pci_disable_device(pdev);
- free_netdev(netdev);
-}
-
-/*
- * atl1c_io_error_detected - called when PCI error is detected
- * @pdev: Pointer to PCI device
- * @state: The current pci connection state
- *
- * This function is called after a PCI bus error affecting
- * this device has been detected.
- */
-static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev,
- pci_channel_state_t state)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- netif_device_detach(netdev);
-
- if (netif_running(netdev))
- atl1c_down(adapter);
-
- pci_disable_device(pdev);
-
- /* Request a slot slot reset. */
- return PCI_ERS_RESULT_NEED_RESET;
-}
-
-/*
- * atl1c_io_slot_reset - called after the pci bus has been reset.
- * @pdev: Pointer to PCI device
- *
- * Restart the card from scratch, as if from a cold-boot. Implementation
- * resembles the first-half of the e1000_resume routine.
- */
-static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- if (pci_enable_device(pdev)) {
- if (netif_msg_hw(adapter))
- dev_err(&pdev->dev,
- "Cannot re-enable PCI device after reset\n");
- return PCI_ERS_RESULT_DISCONNECT;
- }
- pci_set_master(pdev);
-
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- atl1c_reset_mac(&adapter->hw);
-
- return PCI_ERS_RESULT_RECOVERED;
-}
-
-/*
- * atl1c_io_resume - called when traffic can start flowing again.
- * @pdev: Pointer to PCI device
- *
- * This callback is called when the error recovery driver tells us that
- * its OK to resume normal operation. Implementation resembles the
- * second-half of the atl1c_resume routine.
- */
-static void atl1c_io_resume(struct pci_dev *pdev)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct atl1c_adapter *adapter = netdev_priv(netdev);
-
- if (netif_running(netdev)) {
- if (atl1c_up(adapter)) {
- if (netif_msg_hw(adapter))
- dev_err(&pdev->dev,
- "Cannot bring device back up after reset\n");
- return;
- }
- }
-
- netif_device_attach(netdev);
-}
-
-static struct pci_error_handlers atl1c_err_handler = {
- .error_detected = atl1c_io_error_detected,
- .slot_reset = atl1c_io_slot_reset,
- .resume = atl1c_io_resume,
-};
-
-static struct pci_driver atl1c_driver = {
- .name = atl1c_driver_name,
- .id_table = atl1c_pci_tbl,
- .probe = atl1c_probe,
- .remove = __devexit_p(atl1c_remove),
- /* Power Managment Hooks */
- .suspend = atl1c_suspend,
- .resume = atl1c_resume,
- .shutdown = atl1c_shutdown,
- .err_handler = &atl1c_err_handler
-};
-
-/*
- * atl1c_init_module - Driver Registration Routine
- *
- * atl1c_init_module is the first routine called when the driver is
- * loaded. All it does is register with the PCI subsystem.
- */
-static int __init atl1c_init_module(void)
-{
- return pci_register_driver(&atl1c_driver);
-}
-
-/*
- * atl1c_exit_module - Driver Exit Cleanup Routine
- *
- * atl1c_exit_module is called just before the driver is removed
- * from memory.
- */
-static void __exit atl1c_exit_module(void)
-{
- pci_unregister_driver(&atl1c_driver);
-}
-
-module_init(atl1c_init_module);
-module_exit(atl1c_exit_module);
projects / people / pmueller / ipfire-2.x.git / blobdiff